> -----Original Message----- > From: CAI Qian [mailto:caiqian@xxxxxxxxxx] > Sent: Wednesday, July 20, 2011 4:14 PM > To: Xu, Andiry > Cc: Sarah Sharp; linux-usb > Subject: Re: usb3 express card: unable to enumerate USB device > > > > ----- Original Message ----- > > > -----Original Message----- > > > From: linux-usb-owner@xxxxxxxxxxxxxxx [mailto:linux-usb- > > > owner@xxxxxxxxxxxxxxx] On Behalf Of CAI Qian > > > Sent: Wednesday, July 20, 2011 3:36 PM > > > To: linux-usb > > > Cc: Sarah Sharp > > > Subject: usb3 express card: unable to enumerate USB device > > > > > > Hi Sarah and all, > > > > > > While debugging https://bugzilla.kernel.org/show_bug.cgi?id=34782, > > > there are many of those messages after the reboot. > > > > > > usb 9-2: new high speed USB device number 3 using xhci_hcd > > > xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code > > > 0x0. > > > xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code > > > 0x0. > > > usb 9-2: device not accepting address 3, error -22 > > > usb 9-2: new high speed USB device number 4 using xhci_hcd > > > xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code > > > 0x0. > > > xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code > > > 0x0. > > > usb 9-2: device not accepting address 4, error -22 > > > usb 9-2: new high speed USB device number 5 using xhci_hcd > > > xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code > > > 0x0. > > > xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code > > > 0x0. > > > usb 9-2: device not accepting address 5, error -22 > > > usb 9-2: new high speed USB device number 6 using xhci_hcd > > > xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code > > > 0x0. > > > xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code > > > 0x0. > > > usb 9-2: device not accepting address 6, error -22 > > > hub 9-0:1.0: unable to enumerate USB device on port 2 > > > > > > 0000:05:00.0 is the Express Card USB 3.0 card. > > > # lspci > > > 05:00.0 USB Controller: NEC Corporation uPD720200 USB 3.0 Host > > > Controller (rev 03) > > > > > > From lsusb, there is no usb 9-2 but usb 9-1. I guess 9-2 is one of > > > end > > > port from > > > the root hub of the Express Card. > > > # lsusb > > > Bus 009 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub > > > > > > As the results, the end device - USB 2 MP3 (9-3?) device could not > > > be > > > detected > > > until re-attached. Does it look like a hardware or software problem? > > > Any way to > > > debug this enumeration problem any further? > > > > > > > From the log, it appears driver sends set address command to the host, > > but the host returns a command completion TRB with completion code > set > > to 0, which means invalid. Sounds like a HW/FW problem to me. > The problem is in the end device or the host controller, or both? > In the host. It's its responsibility to update the completion code, no matter what the command result is. Thanks, Andiry ��.n��������+%������w��{.n�����{���)�� jg��� �����ݢj����G���� ���j:+v���w�m������w�������h�����٥
